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3. Associations of steps per day and peak cadence with arterial stiffness in older adults

Author

Cabral, Ludmila L.P., primary, Freire, Yuri A., additional, Browne, Rodrigo A.V., additional, Macêdo, Geovani A.D., additional, Câmara, Marcyo, additional, Schwade, Daniel, additional, Farias-Junior, Luiz Fernando, additional, Paulo-Pereira, Ronildo, additional, Silva, Raíssa M., additional, Lemos, Telma M.A.M., additional, Barreira, Tiago V., additional, and Costa, Eduardo C., additional

Published
2021
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4. Carbohydrate Mouth Rinse and Hydration Strategies on Cycling Performance in 30 Km Time Trial: A Randomized, Crossover, Controlled Trial

Author

Ferreira, Amanda M.J., Farias-Junior, Luiz F., Mota, Thaynan A. A., Elsangedy, Hassan M., Marcadenti, Aline, Lemos, Telma M.A.M., Okano, Alexandre H., and Fayh, Ana P.T.

Subjects
Adult, Male, Cross-Over Studies, Dietary Carbohydrates, Drinking, Exercise Test, Mouthwashes, Humans, Organism Hydration Status, Athletic Performance, Research Article, Bicycling, Sports Nutritional Physiological Phenomena
Abstract

The aim of this study was to investigate whether carbohydrate mouth rinse (CMR) improves physical performance of cyclists during a 30-km time trial test and its influence on water balance compared to other strategies of fluid intake. Eleven recreationally trained male cyclists completed a 30 km time trial cycle ergometer under three experimental interventions: (a) CMR, (b) drinking to replace all weight loss (DWL), and (c) drinking “ad libitum” (DAL). Time to complete the 30 km time trial, heart rate, average power, velocity, weight loss, urine color, urine density and pH were evaluated. Statistical analysis was performed using repeated measures analysis of variance (RM-ANOVA) and generalized estimating equations (GEE) with Bonferroni adjustment (p < 0.05). Time to complete the 30 km time trial was similar among CMR 54.5 ± 2.9 min, DWL 53.6 ± 3.9 min and DAL 54.5 ± 2.5 min (p = 0.13). CMR (1.7 ± 0.4%) elicited similar water loss compared to the DAL (1.4 ± 0.6%) intervention, but it was higher than the DWL intervention (0.6 ± 0.6%) (p < 0.01). CMR did not improve the performance of recreationally trained cyclists in a 30 km time trial test compared to other fluid intake strategies. Furthermore, CMR causes higher water loss compared to DWL intervention.

Published
2018

5. Associations of steps per day and peak cadence with arterial stiffness in older adults.

Author

Cabral, Ludmila L.P., Freire, Yuri A., Browne, Rodrigo A.V., Macêdo, Geovani A.D., Câmara, Marcyo, Schwade, Daniel, Farias-Junior, Luiz Fernando, Paulo-Pereira, Ronildo, Silva, Raíssa M., Lemos, Telma M.A.M., Barreira, Tiago V., and Costa, Eduardo C.

Subjects
*CADENCE (Cycling), *ARTERIAL diseases, *OLDER people, *HYPERTENSION, *PHYSICAL activity
Abstract

There is evidence showing an inverse association between steps/day and arterial stiffness in adults. However, the relationship of steps/day and peak cadence with arterial stiffness is poorly understood in older adults. This study aimed to investigate the association between steps/day and peak cadence with arterial stiffness in older adults. This cross-sectional study included 222 community-dwelling older adults (66 ± 5 years; 81.5% females; 70.3% with hypertension). Arterial stiffness was measured by aortic pulse wave velocity (aPWV). Steps/day and peak cadence were assessed by accelerometry. The participants were categorized according to the number of steps/day: sedentary <5000; low active 5000–7499; active 7500–9999; highly active 10,000+. Peak cadence was defined as the average of steps/day of the highest 30 min (not necessarily consecutive) for all valid days. Generalized linear models were used for data analyses. The active (β = −0.34 m/s, 95% CI –0.60, −0.08) and highly active (β = −0.51 m/s, 95% CI –0.83, −0.20) groups had lower aPWV compared to the sedentary group. No significant difference was found between the low active group and the sedentary group (β = −0.21 m/s, 95% CI –0.46, 0.05). Every increment of 1000 steps/day was associated with a decrease of 0.05 m/s in the aPWV (95% CI –0.08, −0.02). Every increment of 10 steps/min in peak 30-min cadence was associated with a decrease of 0.05 m/s in aPWV (95% CI –0.09, −0.01). Our findings show that easy-to-use proxies of the volume (steps/day) and intensity (peak cadence) of ambulatory behavior are inversely associated with arterial stiffness in older adults. The inverse association of steps/day and peak cadence with arterial stiffness is dose-response. • Steps/day (volume) and peak cadence (intensity) are proxies of ambulatory behavior. • Both proxies were inversely associated with arterial stiffness in older adults. • Every 1000 steps/day was associated with 0.05 m/s lower pulse wave velocity (PWV). • Every 10 steps/min in peak 30-min cadence was associated with 0.05 m/s lower PWV. [ABSTRACT FROM AUTHOR]

Published
2022
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